Cast when Damage Taken Support

Cast when Damage Taken SupportSupport, Spell, Trigger
Icon: !
Level: (1-20)
Cooldown Time: 0.25 sec
Can Store 1 Use(s)Requires Level 38Each supported spell skill will track damage you take, and be triggered when the total damage taken reaches a threshold. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.Trigger Supported Spells when you take a total of (528-3272) Damage
Supported Skills deal (-70-6)% more Damage
This Gem can only Support Skill Gems requiring Level (38-70) or lower
You cannot Cast Supported Triggerable Spells directly

Additional Effects From 1-20% Quality:
Supported Skills deal 0.5% increased DamageSupported Skills have 1% increased Skill Effect DurationSupported Skills require 1% reduced amount of Damage taken to TriggerThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.

Acquisition
Drop level: 38Vendor Offer
1x Scroll FragmentMetadata
Item class: Support Gem
Metadata ID: Metadata/Items/Gems/SupportGemCastOnDamageTaken

Cast when Damage Taken is a support gem. It causes a linked spell to trigger when the player takes a certain amount of damage.

Skill functions and interactions

Trigger gem: Like all trigger gems, Cast when Damage Taken only "casts" spells. Attack gems such as Double Strike are not considered spells. Multiple spells can be linked to a single trigger gem, and will all be triggered if so. Multiple copies of Cast when Damage Taken will also function independently.

Damage counter and cooldown: Each linked spell gains an internal damage counter that tracks the total accumulated damage taken from hits, though not from damage over time or the Blood Magic passive (e.g. you cannot use to trigger Cast when Damage Taken). All damage counters will be reset to 0 upon entering a new area. When a linked spell is cast, it is put on cooldown for 250 ms and will not track damage during that time.

Multiple copies of the same gem share cooldowns, meaning that if two copies of the same spell are triggered within 250 ms of each other, the first will trigger and the second will fail to do so as it is on cooldown. This mostly prevents using multiple copies of the same spell with Cast when Damage Taken, though the use of Cast when Damage Taken gems of different levels can avoid cooldown overlap in some circumstances due to the differing amounts of damage required to trigger the spells.

The Cast when Damage Taken gem itself does not have its own counter or cooldown.

Maximum level of supported skills: Cast when Damage Taken cannot support skills with a higher player level requirement than that of Cast when Damage Taken itself. Note that this restriction only applies to active skills; any level of other support gems may be used.

Trigger order: Trigger gems and their linked skills are cast in a certain order that depends both on which item it is equipped on and which socket the skills are in. If there are trigger gems in each equipped item, the order of operation will be:

Main hand ⇒ Amulet ⇒ Helm ⇒ Off hand ⇒ Body armour ⇒ Gloves ⇒ Boots

The linked sockets also follow a specific order, as follows:

1	⇒	2
		⇓
4	⇐	3
⇓
5	⇒	6

Damage effectiveness: The damage effectiveness increases with level, but so does the damage taken per cast; overall, the amount of damage that needs to be taken per damage effectiveness goes up at higher gem levels. The optimum is a level 2 gem, which requires 1442 damage taken per 100% damage effectiveness. In comparison, a level 20 gem requires 3057 damage taken per 100% damage effectiveness.

This does not, however, take into account the increase in damage from being able to use a higher level gem; for instance, a level 4 BladefallBladefallSpell, AoE, Physical, Duration
Level: (1-20)
Cost: (12-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 140%
AoE Radius: 12Requires Level 28Ethereal weapons rain from the sky, dealing damage to enemies in a sequence of volleys. Enemies can be hit multiple times where these overlap.Deals (43-595) to (65-893) Physical Damage
Base duration is 6.00 seconds
Leaves a Lingering Blade in the ground for every Volley
5 Volleys
Maximum 40 Lingering Blades can be left in the ground at a time

Additional Effects From 1-20% Quality:
+(0.05-1) VolleysPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. gem deals an average of 91.5 damage, while a level 20 gem deals an average of 475. On a strict damage-in-per-damage-out basis, Cast when Damage Taken roughly triples in power between level 1 and level 20, depending on the skill used. Any flat added damage will affect this ratio—the more damage added, the less effective it is to level up the Cast when Damage Taken gem.

Targeting: Targeted spells will cast towards the enemy that caused the last damage. Reflected damage is considered to come from the enemy originally damaged. If the damage was self-caused, it will target a random enemy (if there are no enemies, it will be cast at the player, if it is a projectile, it will be fired in a random direction).

Totems: Cast when Damage Taken can't be used with totems.

Gem level progression

Level				Damage Threshold	less/more Damage	Maximum Level of Supported Skill Gems	Exp.	Total Exp.
1	38	40	27	N/A	65% less	38	0	0
2	40	41	29	N/A	63% less	40	388734	388734
3	42	43	30	N/A	61% less	42	477437	866171
4	44	45	31	N/A	59% less	44	583786	1449957
5	46	47	33	N/A	57% less	46	710359	2160316
6	48	49	34	N/A	55% less	48	1355511	3515827
7	50	51	35	N/A	53% less	50	1138877	4654704
8	52	53	37	N/A	51% less	52	1368233	6022937
9	54	55	38	N/A	49% less	54	1638338	7661275
10	56	57	39	N/A	47% less	56	1956648	9617923
11	58	58	41	N/A	45% less	58	3655184	13273107
12	60	60	42	N/A	43% less	60	3017327	16290434
13	62	62	43	N/A	41% less	62	3576232	19866666
14	64	64	44	N/A	39% less	64	4231667	24098333
15	65	65	45	N/A	37% less	65	2395078	26493411
16	66	66	46	N/A	35% less	66	8421063	34914474
17	67	67	46	N/A	33% less	67	16159983	51074457
18	68	68	47	N/A	31% less	68	41170367	92244824
19	69	69	48	N/A	29% less	69	86794448	179039272
20	70	70	48	N/A	27% less	70	157405063	336444335
21	72	72	50	N/A	25% less	72	N/A	N/A
22	74	N/A	N/A	N/A	23% less	74	N/A	N/A
23	76	N/A	N/A	N/A	21% less	76	N/A	N/A
24	78	N/A	N/A	N/A	19% less	78	N/A	N/A
25	80	N/A	N/A	N/A	17% less	80	N/A	N/A
26	82	N/A	N/A	N/A	15% less	82	N/A	N/A
27	84	N/A	N/A	N/A	13% less	84	N/A	N/A
28	86	N/A	N/A	N/A	11% less	86	N/A	N/A
29	88	N/A	N/A	N/A	9% less	88	N/A	N/A
30	90	N/A	N/A	N/A	7% less	90	N/A	N/A
31	91	N/A	N/A	N/A	6% less	91	N/A	N/A
32	92	N/A	N/A	N/A	5% less	92	N/A	N/A
33	93	N/A	N/A	N/A	4% less	93	N/A	N/A
34	94	N/A	N/A	N/A	3% less	94	N/A	N/A
35	95	N/A	N/A	N/A	2% less	95	N/A	N/A
36	96	N/A	N/A	N/A	1% less	96	N/A	N/A
37	97	N/A	N/A	N/A	N/A	97	N/A	N/A
38	98	N/A	N/A	N/A	1% more	98	N/A	N/A
39	99	N/A	N/A	N/A	2% more	99	N/A	N/A
40	100	N/A	N/A	N/A	3% more	100	N/A	N/A

Related unique items

The following unique items are related to Cast when Damage Taken Support:

Item	Base Item		Stats

Strategy

Due to the large amount of damage taken needed per damage effectiveness and the rapid scaling of damage taken required per level, it is advisable to use spells for purposes other than damage that do not depend heavily on the active skill level. Possible choices include:

Offensive:

• for applying Exposure
• for applying Cold Exposure and reducing enemies' Life/Energy Shield regen
• Cold SnapCold SnapSpell, AoE, Cold, Duration
  Level: (1-20)
  Cost: (11-28) Mana
  Cooldown Time: 3.00 sec
  Can Store 1 Use(s)
  Cast Time: 0.85 sec
  Critical Strike Chance: 6.00%
  Effectiveness of Added Damage: 320%
  AoE Radius: 16Requires Level 16Creates a sudden burst of cold in a targeted area, damaging enemies. Also creates an expanding area which is filled with chilled ground, and deals cold damage over time to enemies. Enemies that die while in the area have a chance to grant Frenzy Charges. The cooldown can be bypassed by expending a Frenzy Charge.Deals (34-1440) to (51-2160) Cold Damage
  Base duration is 5.00 seconds
  Deals (28.7-1895.4) Base Cold Damage per second
  Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
  Burst Base radius is 1.5 metres
  Chilled Ground Base initial radius is 1.5 metres
  Chilled Ground Base final radius is 3 metres
  25% chance to gain a Frenzy Charge when an Enemy Dies while in this Skill's Area
  
  Additional Effects From 1-20% Quality:
  (1-20)% more Effect of ChillPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. for Frenzy Charge generation
• Offensive curses such as , , ConductivityConductivitySpell, AoE, Duration, Lightning, Curse, Hex
  Level: (1-20)
  Cost: (24-50) Mana
  Cast Time: 0.50 sec
  AoE Radius: 22Requires Level 24Curses all targets in an area, lowering their lightning resistance and giving them a chance to be shocked when hit.Base duration is (8.00-11.80) seconds
  +(0-1) metre to radius
  Cursed enemies have -(17-36)% to Lightning Resistance
  Hits against Cursed Enemies have +25% chance to Shock
  
  Additional Effects From 1-20% Quality:
  Shocks on Cursed enemies have (1-20)% increased DurationPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket., , , , etc.
• Offensive golems such as , ,

Defensive:

• Guard skills such as , , , Arcane CloakArcane CloakSpell, Duration, Guard, Lightning, Arcane
  Level: (1-20)
  Cooldown Time: 4.00 sec
  Can Store 1 Use(s)
  Cast Time: InstantRequires Level 16Spends a portion of your mana to grant a buff that takes some of the damage from hits for you until depleted. The buff grants added lightning damage based on the amount of mana spent by this skill. Shares a cooldown with other Guard skills.Base duration is 3.00 seconds
  Spends (45-64)% of current Mana
  75% of Damage from Hits is taken from Buff before your Life or Energy Shield
  Buff can take Damage equal to Mana Spent by this Skill's effect
  Buff grants Added Lightning Damage equal to (10-14)% of Mana Spent by this Skill's effect
  This Skill's Cooldown does not recover during its effect
  
  Additional Effects From 1-20% Quality:
  (1-20)% increased Buff EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.,
  • Only one guard skill should be used in all CWDT setups, as they share their cooldown
  • can be used to increase the duration
• for Elusive and Phasing.
• for increased movement speed, reduced visibility and Phasing
  • Useful for builds that often run past packs such as minion or DOT builds
  • Make sure Phase Run is the last skill to be triggered in all CWDT setups
• to block enemies.
• to Hinder enemies.
• , or Cold SnapCold SnapSpell, AoE, Cold, Duration
  Level: (1-20)
  Cost: (11-28) Mana
  Cooldown Time: 3.00 sec
  Can Store 1 Use(s)
  Cast Time: 0.85 sec
  Critical Strike Chance: 6.00%
  Effectiveness of Added Damage: 320%
  AoE Radius: 16Requires Level 16Creates a sudden burst of cold in a targeted area, damaging enemies. Also creates an expanding area which is filled with chilled ground, and deals cold damage over time to enemies. Enemies that die while in the area have a chance to grant Frenzy Charges. The cooldown can be bypassed by expending a Frenzy Charge.Deals (34-1440) to (51-2160) Cold Damage
  Base duration is 5.00 seconds
  Deals (28.7-1895.4) Base Cold Damage per second
  Modifiers to Spell Damage apply to this Skill's Damage Over Time effect
  Burst Base radius is 1.5 metres
  Chilled Ground Base initial radius is 1.5 metres
  Chilled Ground Base final radius is 3 metres
  25% chance to gain a Frenzy Charge when an Enemy Dies while in this Skill's Area
  
  Additional Effects From 1-20% Quality:
  (1-20)% more Effect of ChillPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. to chill enemies.
  • Can be linked with Bonechill SupportBonechill SupportCold, Support
    Icon: B
    Level: (1-20)
    Cost & Reservation Multiplier: 130%Requires Level 38Supports any skill that can chill enemies or create chilling areas.(25-44)% increased Effect of Chill inflicted with Supported Skills
    Enemies Chilled by Supported Skills increase Cold Damage taken by Chill Effect
    Enemies in Chilling Areas from Supported Skills increase Cold Damage taken by Chill Effect
    Supported Skills deal (5-14)% more Cold Damage
    
    Additional Effects From 1-20% Quality:
    Supported Skills deal (0.5-10)% increased Cold DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket. for increased chill effect
• to create Consecrated Ground
• , , or Bone OfferingBone OfferingMinion, Spell, Duration
  Level: (1-20)
  Cost: (16-33) Mana
  Cast Time: 1.00 secRequires Level 12Consumes a corpse, granting all of your minions the power to block both attacks and spells. The skill consumes other nearby corpses, increasing the duration for each corpse consumed.Base duration is 5.00 seconds
  Additional 1.00 seconds Base Duration per extra corpse Consumed
  Grants Minions +(25-35)% Chance to Block Attack Damage
  Grants Minions +(25-34)% Chance to Block Spell Damage
  Grants Minions 4% of Life Regenerated per Second if they have Blocked recently
  
  Additional Effects From 1-20% Quality:
  (0.5-10)% increased Effect of OfferingPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. for passive corpse disposal and minion buffing
• to escape melee range (could backfire).
• Defensive curses such as ,
• Defensive golems such as , .
  • Can be linked with

Other:

• for builds that die often.
• is often used in AFK boss kill attempts such as Uber Elder or Sirus.

Some supports also potentially combine well, especially with a persistent rapid-firing skill such as Ball LightningBall LightningSpell, Projectile, AoE, Lightning
Level: (1-20)
Cost: (12-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: 60%
Projectile Speed: 400
AoE Radius: 22Requires Level 28Fires a slow-moving projectile that damages each enemy in an area around it repeatedly with bolts of lightning.Deals (2-32) to (47-617) Lightning Damage
Base radius is 1.8 metres

Additional Effects From 1-20% Quality:
Base radius is (0.01-0.2) metresPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:

• Blind SupportBlind SupportSupport
  Icon: x
  Level: (1-20)
  Cost & Reservation Multiplier: 110%Requires Level 8Supports any skill that hits enemies.Supported Skills have 10% chance to Blind enemies on hit
  Supported Skills have (0-38)% increased Blinding duration
  
  Additional Effects From 1-20% Quality:
  (0.5-10)% increased Blind EffectThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
• Chance to Flee SupportChance to Flee SupportSupport
  Icon: z
  Level: (1-20)Requires Level 8Supports any skill that hits enemies.Supported Skills have (25-44)% chance to Cause Monsters to Flee
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (1-20)% chance to Cause Monsters to FleeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
• Passive IIR culling via , , and a skill that causes many hits.
• (As of Version 1.2.2 CWDT will only trigger Ball Lightning in this example, Ball Lightning will then only trigger Hextouch if the supported curse is above the CWDT level threshold.)

With self-damaging mechanics, it is possible to cause spells created from CWDT to proc CWDT again, creating a loop. Some possibilities are:

• • Pros: stable output; you can tune proc rate by changing mana cost; only one item required
  • Cons: requires fast recovery to mitigate damage taken. Otherwise, you can kill yourself in your hideout just by testing skills. Usually Agnostic Pathfinder with mana flask, Clarity watcher's eye mod, Battle Rouse

• • Pros: stable output
  • Cons: same as Scold's + huge waste of jewel sockets

• Eye of InnocenceEye of Innocence
  Citrine AmuletRequires Level 68+(16-24) to Strength and Dexterity10% chance to Ignite
  (50-70)% increased Damage while Ignited
  Take 100 Fire Damage when you Ignite an Enemy
  2% of Fire Damage Leeched as Life while Ignited"...and so He said: 'Let only the good meet my gaze'
  and no eye met His. So He called down the cleansing flames
  and let black smoke sweep the Sinners away."
  - Book of Innocence
  • Pros: great recovery (at worst you take damage as frequently as you gain HP back); many recovery options: Vitality mod, Discipline mod, Ngamahu's Sign, Razor of the Seventh Sun, Shaper rings
  • Cons: 100% chance to ignite forces passive tree/ascendancy choices; easier to get best proc rates against packs than against single targets

• • Pros: stable recovery, you can adapt to bad map mods by changing a number of socketed Powerlessness jewels
  • Cons: Pathfinder mana or tons of unique items to get HP recovery, better proc rates against packs than single target

• or
  • Pros: one item
  • Cons: requires external life recovery, low trigger rate (enough to proc Vengeance)

Quick reference chart of commonly used spell gems and their maximum allowed level to be supported by each level of CWDT:

Level	Damage Threshold	Damage Modifier	Max level of spell gems	(Endurance charge bonus)	(additional armour)						Blood RageBlood RageSpell, Duration, Physical Level: (1-20) Cost: (12-29) Life Cooldown Time: 1.00 sec Can Store 1 Use(s) Cast Time: InstantRequires Level 16Adds a buff that deals Physical Damage over time, while increasing Attack Speed and Life Leech. Killing an enemy while this buff is active refreshes the buff duration, and can grant a Frenzy Charge.Base duration is (7.00-10.80) seconds Grants (5-15)% increased Attack Speed 1.2% of Attack Physical Damage Leeched as Life You take 4% of your Maximum Life per second as Physical Damage You take 4% of your Maximum Energy Shield per second as Physical Damage 25% chance to gain a Frenzy Charge on Kill Additional Effects From 1-20% Quality: Grants (0.25-5)% increased Attack SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.			Golem (any)
1	528	-70%	38	3 (106%)	10 (282)	4	5	10	7	4	7	3	5	3
2	583	-66%	40	4 (109%)	11 (328)	5	6	11	8	5	8	4	6	4
3	661	-62%	42	5 (112%)	11 (328)	6	7	11	8	6	8	5	7	5
4	725	-58%	44	6 (115%)	12 (378)	7	7	12	9	7	9	6	7	6
5	812	-54%	46	7 (118%)	12 (378)	8	8	12	10	8	10	7	8	7
6	897	-50%	48	8 (121%)	13 (433)	9	9	13	10	9	10	8	9	8
7	1003	-46%	50	9 (124%)	13 (433)	10	10	13	11	10	11	9	10	9
8	1107	-42%	52	10 (127%)	14 (495)	11	11	14	12	11	12	10	11	10
9	1221	-38%	54	11 (130%)	14 (495)	12	12	14	12	12	12	11	12	11
10	1354	-34%	56	12 (133%)	15 (545)	13	13	15	13	13	13	12	13	12
11	1485	-30%	58	13 (136%)	16 (599)	14	14	16	14	14	14	13	14	13
12	1635	-26%	60	14 (139%)	16 (599)	15	15	16	15	15	15	14	15	14
13	1804	-22%	62	15 (142%)	17 (657)	16	16	17	16	16	16	15	16	15
14	1980	-18%	64	16 (145%)	18 (719)	17	17	18	17	17	17	16	17	16
15	2184	-14%	65	16 (145%)	18 (719)	17	17	18	17	17	17	16	17	16
16	2394	-10%	66	17 (148%)	18 (719)	18	18	18	18	18	18	17	18	17
17	2621	-6%	67	17 (148%)	19 (786)	18	18	19	18	18	18	17	18	17
18	2874	-2%	68	18 (151%)	19 (786)	19	19	19	19	19	19	18	19	18
19	3142	+2%	69	19 (154%)	19 (786)	19	19	19	19	19	19	19	19	19
20	3272	+6%	70	20 (157%)	20 (858)	20	20	20	20	20	20	20	20	20
21	3580	+10%	72	21 (160%)	21 (909)	21	21	21	21	21	21	21	21	21
22	3950	+14%	74	22 (163%)	22 (962)	22	22	22	22	22	22	22	22	22
23	4350	+18%	76	23 (166%)	23 (1018)	23	23	23	23	23	23	23	23	23

Cats when Damage Taken

Cats spawned by Cats when Damage Taken

Cats when Damage Taken was a trigger gem available only on April 1, 2015 as an April Fool's joke. Like Cast when Damage Taken, it caused a linked spell to activate when the player accumulated damage taken, but besides casting the spell, it also summoned black cats. Other properties were identical to the Cast when Damage Taken skill.

Version history

Version	Changes
3.15.0	Trigger skill gems now cost mana. Now has a 250% Cost and Reservation Multiplier.
Unknown	(Not documented in patch notes) the Divergent alternate gem quality has changed to Supported Skills require 1% reduced amount of Damage taken to Trigger
3.12.0	Now has alternative gem quality: Anomalous: Supported Skills have 1% increased Skill Effect Duration (per 1% quality) Divergent: 1% more Damage required to Trigger (per 1% quality)
2.0.0	Enduring Cry is now a Warcry instead of a spell, therefore it can't be cast anymore.
1.3.1g	Fixed a bug with the trigger gems that cause spells to automatically cats on various conditions.
1.3.1	Spells triggered by Cast on Damage Taken have had their damage reduced by 25%.
1.3.0	Trigger gems are now classified as Trigger.
1.2.2	Gems may now only be supported by a single trigger gem, gems supported by multiple trigger gems will be disabled.
1.0.1	The level requirement of gems augmented by Cast on Damage Taken may not exceed the level requirement of the Cast on Damage Taken gem.
1.0.0f	Cooldown of 250ms added.
1.0.0	Cast when Damage Taken has been added to the game.

See also

• Cast on Death SupportCast on Death SupportSupport, Spell, Trigger
  Icon: !
  Level: (1-20)
  Cost & Reservation Multiplier: 0%Requires Level 38Each supported spell skill will be triggered when you die. Cannot support skills used by totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.(0-152)% more Damage while Dead
  100% chance to Trigger Supported Non-Minion Spells on Death
  Supported Skills Cost nothing
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (3-60)% increased Area of Effect while DeadThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
• Cast On Critical Strike SupportCast On Critical Strike SupportCritical, Support, Spell, Trigger
  Icon: &
  Level: (1-20)
  Cost & Reservation Multiplier: 120%
  Cooldown Time: 0.15 sec
  Can Store 1 Use(s)Requires Level 38Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.Supported Attacks will Trigger a Supported Spell when you Crit an Enemy
  Supported Skills deal (19-10)% less Spell Damage
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (1-20)% increased Attack Critical Strike Chance
  Supported Skills have (1-20)% increased Spell Critical Strike ChanceThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.
• Cast on Melee Kill SupportCast on Melee Kill SupportSupport, Melee, Attack, Spell, Trigger
  Icon: &
  Level: (1-20)
  Cost & Reservation Multiplier: 120%
  Cooldown Time: 0.15 sec
  Can Store 1 Use(s)Requires Level 38Must support both a melee attack skill and a spell skill to work. The attack skill will trigger a spell when it kills an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.Supported Melee Attacks will Trigger a Supported Spell on Kill
  Supported Spells have (20-39)% more Spell Damage
  
  Additional Effects From 1-20% Quality:
  Supported Skills deal (0.5-10)% increased Attack Damage
  Supported Skills deal (0.5-10)% increased Spell DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket.